Why buy your bike from Sigma Sports?
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All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
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Rondo Bogan ST 29" Disc Gravel Bike 2021
Thanks to its hardy character, adventure inspired design and reliable components, the Rondo Bogan ST 29" Disc Gravel Bike is the perfect choice for when tackling the longest of rides in the wilderness and the most demanding bikepacking trips.
The steel frame provides a robust core to the build that is also naturally comfortable across rough tracks and paths. The top tube of the frame has a flattened profile to increase compliance, and this is complemented by the vibration dampening full carbon fork. This fork also features TwinTip technology that alters its offset and length so that handling can be tuned in line with the terrain ahead. The geometry of the frameset gives more stability and comfort, lowering rider fatigue on long days in the saddle and multiple attachment points for luggage racks and water bottles cater for the biggest adventures.
The frameset grants huge clearance for its smooth rolling and robust 29" wheels that can be mated with tyres of up to 2.1" for when the gravel paths and dirt tracks are more extreme. A SRAM rival drivetrain shifts crisply amongst its wide range of gear ratios while the mechanical disc brake configuration gives precise stopping power in all conditions and is a breeze to maintain.
- A hardy gravel bike that is packed full of features for the longest bikepacking trips
- Steel frame is robust and comfortable and has a flattened top tube for increased compliance
- Fork, top tube, down tube and rear triangle attachment points fit any luggage rack available
- Mudguard mounting points
- Geometry is tuned for increased control and comfort over long, rough rides
- TwinTip 2.0 Fly carbon fork is horizontally stiff but offers tremendous vertical compliance
- TwinTip concept in the fork adjusts its offset and length to offer either sporty or more composed handling
- Huge clearance for 29” wheels with up to 2.1” wide tyres
- Rondo 29” wheelset rolls smoothly over obstacles, is strong and tubeless-tyre compatible
- SRAM Rival 1 drivetrain shifts with accuracy and dependability
- TRP mechanical disc brakes are user friendly and stop with reliability and composure
|Frame||Rondo Bogan custom formed Tange Champion steel|
|Fork||Rondo TwinTip 2.0 carbon|
|Headset||Rondo - Upper stack|
|Bottom Bracket||Shimano BB-RS500, BSA 68mm|
|Stem||Rondo 60mm (S, M), 80mm (L, XL)|
|Handlebar||Rondo Boomerang - 440mm (S, M), 460mm (L, XL)|
|Bar Tape||Velo Comfort tape|
|Front Brake||TRP Spyre mechanical disc with TRP 160mm rotor|
|Rear Brake||TRP Spyre mechanical disc with TRP 160mm rotor|
|Brake Levers||SRAM Apex 1, mechanical disc|
|Rear Derailleur||SRAM Apex 1, 11-speed|
|Shift Levers||SRAM Apex 1, 1 x 11-speed|
|Chain||SRAM PC1130, 11-speed|
|Cassette||SunRace CSMS7, 11-42, 11-speed|
|Crankset||Rondo Direct, 38T, 170mm (S), 172.5mm (M, L), 175mm (XL)|
|Front Wheel||Rim - Rondo aluminium 700c 622-23 tubeless-ready / Hub - Rondo Superlight Sealed Bearings, 100 x 12mm thru-axle, thread 1.5|
|Rear Wheel||Rim - Rondo aluminium 700c 622-23 tubeless-ready / Hub - Rondo Superlight Sealed Bearings, 100 x 12mm thru-axle, thread 1.75|
|Front Tyre||WTB Nano, 29” x 2.1”, tubeless-ready clincher|
|Rear Tyre||WTB Nano, 29” x 2.1”, tubeless-ready clincher|
|Saddle||Fabric Scoop Flat|
|Seatpost||Rondo, 350mm x 27.2mm diameter|
|Pedals||Available to be purchased separately|
|Claimed Manufacturers Weight||10.7kg, Size S|
|Please note||Tubeless tape, valve and sealant are not included|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance or contact Customer Care. We do not install accessories to bikes, including mudguards.